Elevator



Feb. 9 1926. 1,572,400

N. o. LINDSTROM ET AL,

' ELEVATOR Filed Jan. '10, 1923 5 sheetssheet 1 w INVENTOR. N/LS ammsr/m/v cm; I? E. azorso/v A TTORNEYS Feb. 9 1 926. 1,572,400

N. o. LINDSTROM Er AL ELEVATOR Filed Jan. 10, 1923 5 Sheets She'et 2 5 INVENTOR.

A TTORNEYS Feb. 9,1926. 1,572,400

, N. O. LINDSTROM ET AL ELEVATOR Filed Jan. 10. 1923' 5 Sheets-Sheet 5 JNVENTOR.

Feb. 9 ,.1926.. 1,572,400

N. O. LINDSTROM El AL.

ELEVATOR Filed Jan. 10. 1923 5 sheets sh'et 4.

Lg N iii f' 9 &

fyf.

Patented Feb. 9, 1926.

1,572,400 UNITED STATES PATENT OFFICE;-

NILS O. LINDSTROM,

OF NUTLEY, AND CARL F. E. OLOFSON, OF WEST. ORANGE, NEW

JERSEY, ASSIGNORS T0 ALONZO B. SEE, OF BROOKLYN, NEW YORK.

ELEVATOR.

Application filed January 10, 1923. Serial No. 611,732.

To all-whom it may concern:

Be it known that we, NILS O. LINDsTnoM and CARL F. E. OLorsoN, citizens of the United States, residing at Nutley, county of Essex, State of New Jersey, and Vest Orange, county of'Essex, and State of New Jersey, respectively, have invented certain new and useful Improvements in Elevators, of which the following is a full, clear, and exa't description.

This invention relates to elevators and particularly to power-actuated door operating devicesvfor the car'and shaftway doors. In elevators and other conveyances, where doors must be a frequently operated, and where their-manual operation is inconvenient, prior devices for the power operation of the doors have been unsatisfactory for various reasons, such as because of'the -impossibility of operating the doors rapidly by simple and reliable mechanism, and checking the final closing movement without impact or slamming, and also because of danger or injury to both persons or operating apparatus when for any reason a person .or object is caught in the doorway by the closing doors.- In elevators, where both the car and shaftway doors must be operated and'where some play between the car or cage and the shaftway is unavoidable in successful operation, difiicult'y in the use of power operating means for the doors has been experienced owing to the necessity of operating door latches and the necessity of effecting a close engagement between the door operating mechanism on the traveling parts on the shaftway door.

An object ofthe invention is to provide an improved poweractuated mechanism for the doors of elevators and the like which may be carried by the elevator car, with which the doors of both the cage and shaft.- way may be operated simultaneously; with which the doors may be operated rapidly to within a short distance of their limits of travel and thenbe checkedwithout impact or slamming; witlrwhich danger of injury to the operating mechanism or to a person is avoided whenever the closing door strikes a person or obstruction; with which the starting stresses on the operating motor arereduced to a n'mimum; and with which the application-of power to operate the. door closed and the cage is free to travel in either direction will be interrupted automaticallyas the door reaches its limit of travel in either or both directions. A further object is to provide an improved door operating mechanism for elevators With which the cage or car may operate freely, and with which the operation of the doors will be fi rm and without lost motion; with which the doors must'be entirely closed and the shaftway door latched before the cage can be operated and vice versa; and with which both cage and shaftway doors may be operated manually if necessary. A fur ther object is to provide an improved door operating mechanism for accomplishing the objects and advantages will be apparent from the following description of an em-. bcdiment of the invention and the novel features will be particularly pointed out hereinafter in claims.

In the accompanying drawings:

Fig. 1 is an elevation of *a portion of an elevator shaftway and the cage opposite the door,'and having door operating mechanism constructed in accordance with the invenway being partially-open;

Fig. 2is a fragmentary elevation of a.

'tion, the doors of both the cage and shaftportion of the door operating mechanism,

when both cage and shaftway doors are vertica lv in the shaftway; I

Fig. 3 is an elevation of another part of the door operating mechanism showing the position of some of the operating parts when the doors of both cage and shaftway areopen to their full extet;

Fig. 4 is a. plan of the echanism shown in Figure 1; y r Fig. 5 is a sectional elevation of the mechanism. taken substantially alongthe line of 5-5 of Figure 2; l

Fig. 6 is a sectional elevation of a portion of the device shown in Figureo with the parts in a different operated condition,

the section being taken approximately along the mechanism together with the latch of the shaftway door, the section being taken substantially along the line7- 7 of Figure 5;

Fig. 8 is an elevation of aportion of a Mshaftway door with the latch carried therefor disconnecting the power operating mechanism from the doors;

Fig. 10 is a sectional elevation of the pert' n of the mechanism shown in Figure 9 and taken substantially along the line 10 -19'of Figure 9; and

Fig. his a perspective of the key employed in operating the mechanism shown in Figures 9 and 10.

In the illustrat vention, a sliding gate or door 1 (Figs. 1

and 4) is adapted to close a door opening 2 in a suitable shaftwav 3 of an elevator. An extensible gate or door 4 is carried by the cage or car A of the elevator so as to close or open the doorway in the cage in a manner well known inthe art. A suitable frame 5 is carried upon the car or cage, preferably upon the top wall thereof and adiacent the edge or, side having the gate or door 4.

A shaft 6 (Fig. 5) extends through and is rotatably mounted in an enclosing casing 7 which is mounted upon the. frame 5 in a suitable manner. A worm gear 8 is fixed upon the shaft for rotation therewith within the casing 7. A suitable motor 9 such as an electric motor, is mounted upon the frame 5 and at its lower end its drive shaft 10 (Fig. 2) enters the casing 7 (Fig. 5) and carries the worm screw 11 (Fig. 2) whiehmeshes with and drives the worm wheel 8. A' peripherally grooved pulley 12 is fixed upon an end of the shaft 6 which extends outwardly through the casing 7. so that when the motor 9 operates it will, through the worm, worm wheel, and shaft 6. drive the pulley 12 in either direction dependent upon the direction of rotation of themotor. The

pulley 12 and the parts supporting and driving it are disposed adiacent the side edge of the doorway towards which the door of the cage is moved when it is closed.

At the opposite side of the car or-cage, a

bearing member 13 (Figs. 3 and 4) is pivotally mounted 'by a pin 14 in a suitable bracket 15of the frame 5, so as to swing in a vertical plane' and toward and from the pulley 12. A second grooved pulley 16 is rotatably carried by the lower end of the bearing member 13 so as to be disposed in the plane of the pulley 12. A flexible driv ing cable 17 extends betweenand passes over both of the pulleys 12 and 16 so that the pulley 16 will be driven by the cable 17 from the pulley 12. A rod 18 extends rearwardly from the bearing member 13, passes loosely through an aperture in a lug or plate 19, and carries upon its projecting end an ed embodiment of the ,in-

adjustable nut and a washer 21. A helical compression spring 22 is disposed on the rod'18 axially thereofbetween the plate 19 and the washer 21, so that when the nut 20 is adjusted along the threaded extremity of the rod 18, the spring 22 will be compressed between the washer 21 and the plate 19. The spring 22 will therefore exert apull upon the rod 18 in a. direction to carry or rail 23 for purposes which will hereinafter appear. The ends of the cable 17 are connected together to form a continuous cable by a suitable coupling block 26 which carries a pin 27'on one side face thereof. A link 28 is pivotally connected at one end to the pin 27 (Fig. 2) of the coupling block 26, and at its other end is pivotally coupled by a pin 29 to the carriage 24. When the cable 17 is given linear movement by the operation of the motor 9, the link 28 connected between it and the carriage will cause the travel of the carriage along the track or rail 23 in a direction dependent upon the direction of rotation of the motor 9.

A plate 30 (Figs. 2, 3, 5 and 6) extends downwardly from the forward end of the carriage and at its lower end is provided with an aperture 31 and near its junction with the carriage with a strap 32 forming aloop. A casing 33, composed of two parts which are secured together in a suitable manner suclrras by screws 34, is slidably mounted between two vertically extending bars 35 of the cage door or gate 4, near the forward side edge thereof. The casing is provided with an extension tongue 36 which, when the casing is shifted upwardly, is

adapted to enter the loop formed between the plate 30 and'the strap 32, so as to couple the carriage 24 to the casing 33-and to the gate 4. A pawl or lever 37 is pivoted at 38 within thefcasing 33 and carries at its upper end an offset tongue or head 39 (Figs. 5, 6 and 9) which, when the casing is coupled by the tongue 36- to the carriage, is adapted to enter and pass through the aperture 31 in the lower end ofthe depending plate. 30 of the carriage and" also enter an aperture40 in the-casing which is then in alignment 7 "with the aperture 31. This lever or pawl 37 therefore serves to couple the casing to the carriage so as to prevent downward movement of the casing, which downward movement would disconnect the casing and gate from the'carriage. A spring 41 acting between a wall of the casing and the lever 37 serves to yieldingly hold the pawl or lever 37 in looking engagement with the depending plate of the carriage.

Some of the vertically extending bars of which the gate 4 is composed are extended to form hangers 42, carrying rollers 43 which run upon a rail 44 that is supported in a position parallel with rail 23 by an angle member 45 forming a forward, upper, corner edge of the car A so as to permit of the travel of the Car gate 4 in a direction parallel to the travel of the carriage 24. The other bars of the gate extend upwardly on opposite sides of the rail 23 to be guided thereby.

A vertically extending flange or rail 46 is provided upon the face of the casing 33 toward the shaftway door 1. The same face of the casing is also provided with struck up guides 47 which form, with the face of the casing, horizontally extending passages in which links 48 are mounted for reciprocation. These links pass through apertures in the flanges 46, and are connected to bell cranks 49 which are pivotally mounted at 50 upon the casing 33. The opposite ends of the links 48 are connected to a flange or rail 51 which extends parallel with the flange 46, so that when the links 48 are reciprocated in the struck up guides 47, the rail or flange 51 will be moved toward or from flange or rail 46 while remaining substantially parallel thereto. The corresponding ends of the rails are preferably made divergent. The arms of the. bell cranks 49 which are not.connected to the links 48 are connected together by a link 52 Which extends upwardly into proximity to the carriage 24. A rod 53 is pivotally connected to the pivotal connection between the link 52 and one of the bell cranks 49, extends through an aperture in a lug 54 upon the casing 33, and upon its projecting end carries a nut 55 which is threaded thereon. A helical compressionspring .56 surrounds the rod 53 between the'nut 55 and the lug 54 so that when the nut 55 is adjusted along the rod, the spring will be compressed to dif-.

ferent' extents. The spring 56, by its reaction against the lug '54, will, if permitted 7 toact, drive the rod 53 through the lug and rotate the bell crank levers 49 in a direction to shift the movable flange or rail 51 in'a direction away from the relatively fixed rail or flange 46. I

A bell crank lever 57 is pivotally mounted at SS-upon the carriage 24, and one arm of the bellcrank is pivotally connected by a pin 59 to a link 60. The link 60 passes between the guide strip 61 and the carriage. and abuts against the upper end of the link 5 A rod 62 is pivotally connected at 63 to that arm of the bell crank which. is connected to the link 60, passes loosely through an aperture in a lug 64 of the carriage. and upon its projecting end is provided with a nut 65 threaded thereon. A helical compression spring 66 surrounds the rod 62 between the nut 65 and the lug 64, and when the nut. 65 is adjusted along the rod 62 the spring 66 will be compressed to variable extents. The spring 66, by its reaction upon the lug 64, tends to pull the rod 62 through the lug 64 and thus rotate the bell crank 57 in one direction. When thebell crank 57 is rotated by the spring 66, sufficiently to carry the arm thereof which is connected to the. link 66 into a depending nearly substantially vertical position, the link 60 will be depressed I and, by its endwise abutting engagement with the link 52, will depress the latter agalnst the action of the spring 56 and cause a shifting of the flange or rail 51 to-' of the link 28 taken when its"connection to the cable passes around the periphery of the pulley 12. When the carriage 24 is operated by the cable 17 forwardlv,'tl1at is, in a direction to carry the gate 4 intoa closed position, the. coupling block 26 will reach and pass around with the pulley 12 and in doin so will carry the link 28 upwardly and cause it to engage and operate the rea'rwardl'vturned end 67 of the bell crank 57'. This operation of the bell crank 57 against the action of the spring 66 carries the link 66 u 'nvardly and releases the link 52. The link 52. thus released, is shifted upwardly by the u I I spring 56 and moves the guide rail 51 away from the relatively fixetl rail 46. This movement of the bell crank 57, suiiiciently to entirely release the link is preferabl ac'omplished just after a theoretical line joining the pivotal connections of the link 28 to the cable and carriac'e passes throu h the axis of rotation of the pulley, and before the link reaches-the position shown in Figure 2. A suitable resilient buffer 68 is mounted upon the frame 5 so as to be engaged by the coupling 26 when reaching the position shown in Fig. 2, in order that further movement of the link 28 may be prevented. The resistance of the spring 66 to the turning of the bell crank 5-7 by the link 28 serves also as a resilient bumper and assists somewhat in limiting movement of the link 28., The

action of the spring 66 alone as a buifer would be too uncertain and consequently the buffer 68 is provided to stop the coupling 26 exactly in the desired position.

A latch lever (59 is pivoted upon a pin 70 projeiting from the inner face of the shaftway door or gate adjoining its forward side edge, and when the shaftwav door or gate 1 is closed, the hooked end 71 of the latch.

and a depending lug of the latch lever' 69 so as to normally rotate the latch lever in a direztion to carry its hooked end 71 down wardly. A shoulder 81 on the latch lever 69 is adapted to abut against a fixed abutment 82 on the latch frame, and limit downward movement of the hooked end 71 under the action of the spring 78. \Vhen the latch lever 69 is in its downward position. (see Figs. 2 and 8) the roller 75 will be offset. in a horizontal direction, from the roller 74 for a purpose to be explained hereinafter. \Vhen the doors of the car and shaftway are closed, and the car is traveling in the shaftway, the guide rails 46 and Y51 will pass on opposite sides of the rollers 74 and 75 and out of contact therewith (see Figs. 2 and 7). lVhen the cage is stopped opposite the shaftway door, and the motor 9 is operated to impart linear travel to the cable 17, the link 28 will be carried downwardly from the position shown in Figure 2, and as the coupling 26 passes downwardly around the pulley 12, thecarriage 24 will be pulled forwardly through a small distance, which is suflicient to carry the relatively fixed rail 46 into contact with the periphery of the roller 7 4 of the latch of the shaftway gate. The concomitant downward movement of the link 28 from the position shown in Figure 2 will release the bell crank 57. whereupon the spring 66 will shift the bell crank 57 in a direction to force the link 60 downwardly and depress the link 52. The depression of the link 52 will shift the movable flange or rail 51 toward therelativeh fixed flange or rail 46, and in moving, the rail 51 will engage with the periphery of the roller 75 and carry" it into a position vertically above the roller 74, which movement causes a rocking of the latch lever 69 in a direction to carry the hooked end 71 out of engagement with the lug 72 and release the shaftway door for operation. As the carriage starts its main rearward or opening movement the rails 46 and 51, which now engage with the opposite sides of the roller 74, have. a firm engagement with the door 1 of the shaftway and will carry it with the carriage in its opening or rearward movement. The car door or gate 4 will also move in an opening direction due to its positive connection with the carriage.

A bell crank 83 (Figs. 1 and 3) is pivoted at 84 to the frame 5, adjacent the position of the carriage when the doors have been opened to their maximum extent. A roller 85 is pivotally mounted upon one arm of the bell crank 83 so as to be engaged and operated by an inclined cam surface 86 of a cam 87 carried by the carriage 24, when the carriage reaches a position approximately at its limit of travel in a door opening direction. A spring 88 acts between an abutment 89 of the frame 5 and an arm of the bell crank 83, so as to normally hold the bell crank in a position with its antifriction roller 85 within the path of travel of the cam 87.

A link 90 is pivotally connected at one end to that arm of the bell crank 83 which does not carry the roller 85, and at its opposite end is mounted for reciprocation in an aperture in a wall of a switch box 91. The end of the link 90 within the switch box also has a slidable bearing in a lug 92 projecting from the rear wall of the switch box. A bridging contact 93 is carried by the link 90 within theswitch box 91. The contact 93 is insulated from the link 90 and, when the roller 85 is not engaged by the cam of the carriage, the contact bridges two circuit contact terminal posts 94 and 95, and by holding the link 90 will prevent move ment of the bell crank 83 by the spring 88 beyond a position in which the roller 85 is within the path of the cam 87. The terminal posts 94 and 95 are connected by wires 96 and 97 to the electric motor 9 for controlling the operation of the motor 9 in one direction. Thus when the carriage 24 has reached approximately its limit of travel in a door opening three 'on, the operation of the bell crank 83, which is caused by its roller 85 riding up the cam surface 86, will cause a movement of the link 90 in a direction to carry the bridging contact bar 93 out of enga gement with the terminal posts 94 and. 95. This will arrest operation of the motor 9 in a door opening direction without preventing operation of the motor in the opposite direction. The link 28 by reason of its decreasing horizontal movement as the coupling 26 reaches and passes around the pulley 16 will check the opening movement of the doors and carriage, but a resilient buffer 16 is also provided upon the frame 5 within the path of. the coupling 26 to prevent overrunning thereof.

e a door closing direction, and upon one arm is provided with an anti-friction roller 100 which is within the path of a cam 101 that is carried by the carriage 24. The cam 101 is provided with an inclined cam surface 102, up which the roller 100 will ride when the carriage reaches approximately its limit 0 travel in the door closing direction. The arin of the bell crank 98 which does not carry the roller 100 is pivotally connected to a link 103 which passes through and reciprocates -in a wall of the switch box 91 and also in a lug 104 projecting from the rear wall of the switch box. An insulated bridging contact bar 105 is carried by the link 103 within the switch casing, and when the roller 100- is within the path of the cam 101, the link will have a position such that the bar 105 will engage and bridge two terminal binding posts 106 and 107. The engagement of the bar 105 with the posts 106 and 107 limits the rotation of the bell crank 98 so as to hold the roller 100 normally within the path of the cam 101. The terminal posts 106 and 107 are connected by wires 1.08 and 109 respectively to the motor 9 for controlling its rotation in a door closing direction. This control does not affect its ro-' tation in the opposite direction. A spring 110 reacts between an abutment 111 of the frame 5 and an arm of the bell crank 98 so as to normally rotate the bell crank into a position in which the roller 100 is within thepath of the cam 101 and the bar 105 in contact with posts 106 and 107.

Vhen the motor 9 is operated in a door closing direction the carriage will travel toward the pulley 12 and carry both doors or gates in a closing direction. bVhen the carriage has reached approximately its limit of travel in a closing direction, the roller 100 will rideaip theinc-lined cam surface 102 of the cam 101, which has been brought beneath the roller by the travel of the Can riage 24, and rock the bell crank 98 to operate the link 103. This operation of the link 103 will carry the bridging contact bar 105 out of electrical contact with the terminal posts 106 and 107 and break that circuit of the motor 9 which is used when the motor operates in a door closing direction. This interruption of the operation of the motor 9 is preferably timed to occur at approximately the completion of travel of the carriage.

During the final movement of the carriage, the coupling 26, to which it is con-' nected, willpass aroundthe periphery of thepulley 121 and, because of this perlpheral travel its horizontal component of travel will decrease from a maximum rate at the point where the coupling member 26 reaches the pulley 12 to zero where a theoretical line joining the pivotal connections of the link 28 to the coupling 26 and the carriage 24 passes through the axis of rotation of the pulley 1.2. The travel of the carriage and doors in a door closing direction, which may be very rapid fonthe major portion of the movement will therefore by the crank action at the pulley 12 be quickly and effectively checked within a relatively shortterminal movement without impact or slamming of the doors, which terminal movement of the doors will comprise that which is produced while the coupling member 26 is traveling around a portion of the periphery of the pulley 12.

A link or rod 112 is suspended from the frame 5 by links 113 and 114 which are articulately connected both to the frame and to the rod or link 112. A pin 115 extends laterally from the rod or link 112 and, when the latter is swung endwise in one direction, the pin 115 is adapted to engage and operate an arm 116, depending from the bell crank lever-98, so as to operate the bell crank in ,a circuit opening direction. This operation is similar to that taking place when the carriage cam 101 acts upon the roller 100 to cause an opening of that circuit to the motor 9 which controls its door closing operation. A safety member or link 117 is connected by parallel links 118 to the door or gate 4 of the car or cage, to form its extreme forward side edge, the links 118 being pivotally connected to both the gate and to the safety member.

The upper end of the safety member 117 is provided with a lateral extension 119 carrying 21 depending pin 120, which pin is adapted to normally rest upon the forward hanger 42 of the door or gate 4 and limit downward movement of the safety 11181111381 117 beyond a position in which the links 118 make an acute angle with the horizontal.-. Thus, when a force is applied laterally to thesafety member, it will be given a vertical movement by reason of the inclined position of the links 118. The lateral extension 119 of the safety member extends beneath the link 112 and is provided upon its upper face with pins 121 which embrace 0ppoiite sides of the link 112, so as-to prevent displacement ofthc upper end of the safety member from beneath the link 112. Thus when the safety member '117.is forced upwardly by forces applied laterally thereto,

it will exert lateral force-son the link 112. hen the link 112 rests upon the safety member, and when the latter is in its lowermost position, the links 113 and 114 will also make acute angles to the horizontal so that vertical forces applied laterally to the" link 112 will cause it to swing horizontally.

Thus the vertical movement of the safety I member, such as would occur if the car door should strike a person or obstruction during its closing movement, will cause a horizontal movement of the link 112, and the latter movement, by reason of the engagement of the pin 115 with the depending arm 116 of thebell crank 98, will interrupt the connection between the circuit wires'108 and 109 in the switch box and thus prevent operation of the door in a. closing direction by the motor 9 as long as the obstruction remains in th'e doorway. i

' A contact'pin 122 is carried by and insulated from the end of the latch lever 69, and when the latch lever is in latching engagement with the stationary latch lug,72, the pin 122 is adapted to rest upon a terminal contact post 123 provided within the latch easing'73. A spring terminal member 121 is also secured within the latch casing 7 3 soas to be engaged and flexed by the end of the pin 122 as the latch lever moves into latching engagement with the latch casing. The pin 122 thus bridges the terminal members 123 and 124 when the door I is latched. Suitable wires 125 and 126 connect the terminal members 123 and 124, respectively, to the mechanism for controlling the travel of the cage or car in the shaftway, so that when the circuit between the wires 125-and 126 is broken, which occurs when the latch lever is disengaged from the latch lug 72, the mecha nism for operating the car or cage Wlll be incapacitated. The details by which the wires 125 and 126 control the cage-operating mechanism are not shown or described, because this feature per' e is old in the art and is omitted hereto avoid obscuring the novel features of the im'ention by old features.

It may happen that for some reason, such as in case of mechanical or electrical trouble in the door operating mechanism, manual operation of the doors of both car and shaftway may be necessary or desirable. Accordingly, provision has been made for such manual operation. A split casing 127 (Figs, "9 and 10) is secured to two of thB'VG-BIBICQI which clamp the casing sections together.

and to the door bars and by a screw 128 which passes between the casing sections and also through one of the bars.

A-crank de vice 129 is rotatably mounted in the casing 127 and carries a crank pin 130 eccentrically of its axis of rotation. 'A connecting link 131 is disposed between'the upright bars of the cage door and atits lower end enters the casing 127 through an aperture in its upper wall. The end of-the link 131 withinthe casing 127 is provided withra transversely extending, elongated slot 132, in which the crank pin 130 engages. Thus as the crank 129 is rotated the connecting link 131 will be reciprocated vertically.

The upper end of the 13. 11; 131 is offset as vertical,

at- 133 so as to form a shoulder which-abuts against the lower end wall of the casing 33 and then extends upwardly through an aper the casing 33- is interlocked with the car riage2el the crank device 129 is disposed in such a position-that a line joining the crank pin and the axis of rotation of the crank device 129 will make an acute angle with the as shown particularly in Figure 9. i

The crank device 129 extends through one of. the side walls of the casing 127 and is provided with a semi-cylindrical recess 137. A suitable operating key 138 is provided with a semi-cylindrical end 139 of a size corresponding to the recess 137 in the crank device, so that when the end 139 of the key is inserted into the semi-cylindrical recess 13? and rotated, the crank device will be rotated. This rotation should be in a direction to carry the crank pin directly ,mto a vertical position and impart a slight upward movement to theconnecting link 131. This slight upward movement of the link 131 causes its-shoulder at 133 to engage with the lower wall of the casing'33- mg arm 3O of the carriage sufliciently to provide clearance for the latch end 39 of the latch lever 37.

A further, rotation of the crank device will carry the crank pin downwardly and cause a downward pull'upon the connecting link 131. As the link 131 moves downwardly the cam end 135 thereof will engage with the cam surface 136 of the latch lever 37, and by reason of the fact that the easmg 33 will remain inits upper position by its frictional engagement with the bars 35 of the cage or car gate,'the action between the cam 135 and the camvsurface 136 will pivot the latch or pawl 37in. a direction to disengage the latch end 39 thereof from the aperture 31 of the depending arm 30 of the carriage 24. Further downward travel of the crank pin will cause engagement of a 2'4.- Theeasing 33 is provided in its sides with a slot 33 to clear the depending extension 30 of the carriage when the casing is in its lower disconnected position, and permit travel of the casing past the carriage without interference therewith. This relative position of the casing and carriage is shown with the upper end of the lever 37 overlying the bar 1411 When the lever 37 is disengaged from the carriage and the casing 33 is pulled downwardly by operation of the crank device 129, the oblique portion of the lever 37 will pass to one side of the bar 141 and the upper otl'set end of the lever will ride against the face of the cross bar 141. The cross bar 141 will thus hold the lever 37 in its retracted position until the casing 33 is returned to its upper position. Thus the car gate may be operated manually in either direction without interference from the mechanical operating means.

The door 1 of the shaftway is provided with a cylindrical, transverse aperture 143 through which the semi-cylindrical end 139 of the key 138 maybe passed and rotated therein. The door latch lever 69 is provided with an abutment surface 144 which,

when the latch lever 69 is in its latched position in the latch casing 73, will extend diametrically across the aperture 143 inthe shaftway door. The semi-cylindrical end 139 of the key may thus be passed through.

the door aperture and into abutting rela t1on with the abutment surface 144, so that rotation of the key will cause a camming action between the semi-cylindrical end of the key and the abutment surface 144, which action will rock the latch lever in a three-- tron torelease it from the latch casing 73 and permit of manual operation ofthe door in an opening direction.-

When the gate is to be reattached to the carriage for power operation, the carriage is posit'oned with its depending extension 30 within the casing 33, and with the extension 36 of the casing directly beneath the 32 of the carriage. The crank device 129 is then given a reverse movement which operates the connecting link 131 upwardly. As the link 131 moves upwardly its shoulder 133 will abut against the bottom wall of the casing 33 and shove the casing upwardlyso as to project the extension 33 of thecasing beneath the strap 32 of the carriage,

and to carry the aperture 40 into alignment:

with the aperture 31 of the depending extension 30of the carriage. During this upward movement of the casing, the cam end 1.3 f e link 181 i l ha e move clear of strap the cam surface 136 lf fore the casing is engaged and operated by the shoulder 133, and unless otherwise restricted the lever .37

would be operated by its spring41 in a di- Y rection to carry its latch end 39 beneath the extension 30 of the carriage, The leverw37, however, is held in retracted position by its engagement with the s de of the cross bar 141 until the casing 33 has been shifted- Son 145 thereof, which normally runs in a mace between the track 44 and the angle member 45 which supports it, will still remain in this space so as to prevent lateral displacement of the casing, and will always hold the casing in a position tobe projected upwardly into re-engagement with the carriage.

In the operation of the device, the doors of boththe ear and shaftway will be nor.- mally closed, and the door 1 of the shaftway will be latched in closed position by the engagement of the latch lever 69 in the latch casing 73.. In this position of the parts which is shown in Figure 2, the fixed rail 46 will be spaced a short distance from the there will be sufficient clearance between the rails 46 and 51 and the rollers 74 and 75 to avoid danger of collision betweenthem because of small lateral movements of the car which are necessary for free operation. of the car in the shaftway. The corresponding ends of the rails are also made slightly divergent so as to avoid possibility of collision of the rails with the rollers during thetravel of the elevatorcar in the shaftway.

\Vhen the elevator car isstopped opposite a door of the shaftway and the operator desiresto open the door o't'thc car and the door of the shaftway thcn adjacentthereto, he will close a suitable circuit, not shown, by switcheslocated within the car, which will energizethe electric motor 9 a'ndcause it to operate in a door-opening direction. The

motor 9 will act; through. the worm and worm wheel-to drive the pulley 12 in a-clockwise d1rect1on (F1gure 2) and thereby impart linear travel to the flexible cable 17.

As the/cable moves with the pulley 12, the lmk28 will be pulled forwardly through a short distance, so as to impart asmall for ward movement -to the carriage that will carry the fixed rail 46 into engagement with the periphery of the roller 74.-

At the same time the link 28 will descend and release the bell crank lever 57, whereupon the spring 66 will rotate this bell crank lever in a direction to depress the link connected thereto. This depression of the link 60 will cause a depression of the link 52, and the latter, by its connection through the bell crank 49 and links 48 to the relatively movable rail 51, will shift the movable rail toward the fixed rail until it engages with the periphery of the roller 74. The rail 51 in moving toward the fixed rail 46 will engage with. the roller 75, which is offset in a horizontal direction to one side of the roller 7 4, and'by its engagement therewith will rock the latch lever 69 in a. direction to carry its latch nose 71 out of latching engagement with the latch lug 72. The unlatehing movement of the lever 69 will carry its pin 122 out of bridging relation with the circuit controlling operation of the elevator car in the shaftway, so that operation of the elevator car will be prevented as long as the latch is held inits unlatched position. This forward movement of the carriage, and the movement of the rail 51 toward the rail 46, will occur before the rearward or door opening travel of the carriage 24 begins.

Continued movement of the coupling 26 around the periphery of the pulley 12 will cause it to propel the carriage 24 rearwvardly, that is, ina door-opening direction, and by reason of the engagement of the rails on the carriage with the roller 74 on the shaftway door, and by reason of the connection between the carriage and the -.'car gate, both doors will be operated rearspring 111 will operate the bell crank .98 and the link'103 to carry the bridging pin 105 into br dgingzrelation with the circuit terminals 106 and'lO'i, which bridging relation places the circuits of the motor 9 in a condition to permit of the operation of the motor 9 in a door-closing direction.

" When the carriage 24 has reached ap-.

proximately its rearward limit of travel, the coupling 26 will reach the periphery of the pulley 16 and travel around the. same in a manner similar to its travelaround the driving pulley 12. "During the travel of the coupling element 26 around the periphery of the pulley 16, its horizontal component of travel will decrease rapidly,

and consequently will exert an increasing check. upon the opening travel of the carriage doors. The bulfer16 will beenstrain upon the motor 9.

-zontally will carry the .gaged b the coupling device 26 after its travel or some distance around the periphery of the pulley 16, and will eifectively limit the rearward travel of the carriage and doors. 1

When the carriage 24 has nearly completed its travel in a door-opening direction the cam 87 will engage the roller 85 and be understood, of course, that the motor 9 may be stopped, startedorreversed by the operation of the switches within the control of the car operator at any time, even during its travel in either direction.

WVhen'the operator desires to close the doors, he closes a suitable circuit to the motor 9 which causes its operation in an opposite direct-ion, and through the driving connection of the motor 9 to the pulley 12 the flexible cable .17 will be given a linear travel in an opposite direction. The cranklike action between the link 28 and the pulley lfi-whilethe coupling element 26 is in engagement with the ppriphery of the pulley, serves to place the carriage and doors. in operation with a progressively increasing speed without placing an undue The carriage 24. in moving forwardly, will carry the doors of both car and shaftway in a closing direction. cam 87 out of contact with the roller the spring 88 will operate the .bell'crank As soon as the carriage carries the terminals 94 and 95, and again enable operation of the motor 9 in a door-opening direction whenever the switch controlled by the operator for that purpose is operated.

If a person or object should be caught in. any 'part'of the doorway as the doors.

travel into closed position, the engagement of the safety member 117 with such person or object will eause'a movement of the safety member vertically upon the ear gate. and this movement of the safety member will be upwardly. The safety membeinremains beneath thelink 112 during its entire travel and will impart to said link a lateral force causing it to swing h ri-- zontally: The link 112 in moving horiin 115 thereon against the depending arm 1160f the bell crank 98, and operate the latterin a direction to shift the link. 103 into the casing to a greater-extent. \By this-- movement, the i ving relation with the circuit terminals 106 and 107.

controls the operation of the motor 9 in a door-closing direction, and consequently the motor 9 will be incapacitated and no further travelof the doors will res ult as long as the safetymember remains in engagementwith the person or obstruction in the door-- way.

7 As soon as the obstruction. or person is removed from the doorway, the safety memher 117 will descend by'gravity until the pin 120 thereon rests upon the hanger 42. The

falling of the safety member releases the link 112' which swings in a reverse direction by the action of gravity, and also by the action of the spring. 111' upon the bell crank 98. The bell crank 98 which is thus released, will beoperated by the spring- 111 to. carry the link 103 in a direction torestore the bridge pin 105 into bridging relation with 'the circuit' terminals 106 and 107, thus automatically re-energizin the motor 9 and causingit to complete the oor-closing movement.-- 7

The spring 22 normally pulls the bearing element 13 in; a direction away from the pulley .12, which serves to pull the'pul'ley 16 n a direction to keep the cable 17 taut, and compensate for variations in thelength of the cable 17 due to temperature changes. If, for any reason, the doors stick,'or their travel-isobstructed,the spring22 will yield and allow movement of the pulley 16toward the pulley 12, and thereby slacken; the

cable 17 sufficiently to allow slippage thereof v the doors and carriage on the pulley 12. -Thus the motor 9 might continue to operate, but by reason of the slippage of the cable on the driving pulley,

This prevents burning out of; or other 'iniury to the motor, such as might occur if the travel of the doorsand carriage were prevented without provision-for stopping the motor or providing for slippage. WVhen the l carriage and doors,have .n'carly reachedtheir coupling element engages with the pulley forward travel of the carriage. and doors, will quickly and effectively check the doors in their closing movement without imforward. limit of movement, the coupling element '26 willreach thepulley 12 and pass horizontal component of travel of the coupling element26'will decrease from a maxi- 12, to zero at the point where the crank action of the link 28 causes a reverse movementof the carriage. This" latter reverse 'movement will occur when a theoretical line ioining the pivot pins27 and 29 of the link 28 passes through the axis of rotation of the pulley 12. This crank-like checking o the The circuit between the wires '108 and 109, which is interrupted thereby,

will not be operated;-

the

pact or slamming, and within a relatively 1 short extent of their travel.

When the carriage 24 has nearly com-h pletedits forward limit of movement in a door-closing direction the roller 100 will ride up the cam .surface102 of the cam 101 which travels with the carriage, and by op- ,erating the bell crank 98 will open the circede slightly from the roller 74 and the link 28 will engage with and operate the bell crank lever 57 against the action of the spring 66. This operation of the bell crank 57- will result in an upward movement of the link 60 and a release of the link 52. Thereupon the spring 56 will become active, shift the link 52 upwardly, and shift the rail 51 away. from the fixedirail. The rail 51, in moving away from the fixed rail 46, will release the -.roller 75, and thereupon the spring 78 will rotate the latch lever 6.9 into latching en. gagement with the lug 72 of the latch cas ing 73, which'securely locks theshaftway door in closed position. The falling of the latch lever into latching position will carry the pin 122v thereon into bridging relation with the circuit terminals 123 and 125, controlling: the operation ofthe elevator car, i

and renders "possible the operation of the car. The spring 66 will act somewhat as a buffer, through the bell crank 57, in. checking the travel of-the link 28, but the resilient buffer 68 will always stop the coupling element 26. in .a position to insure the proper positioning of the carriage 24. 1

, When, for any reason, manual operation of the doors is desired, the key 138 may be, inserted into the crank device" 129 and opery ated to pull the casin'g33 downwardlyand disengage it from the carriage 24. The doorsof both car and shaftway may then be operated manually to either open or closed posit-ions. When the casing '33 is pulled downwardly to disconnect it from thecarriage, the extension 145 thereon will.

remain in the, space between the track 44 and the angle member 45 supporting it so that the casing 33 will be kept in proper position to be reconnected to the carriage.

when the carriage is brought into proper position over the same. By a reverse operation, the doorsmay be re-connected to the carriage for operationtherewithv by the electric motor. If anyone on the outside of the shaftway desires tooperate-l the, shaftway door, the key 138 may be inserted throughthe aperture 143 and rotated to cause a camn' ing action between the semi-cylindrical end 139 ofthe key and theabutment surface 144; of the latch lever. This causes .a rotation ot the latch lever 69 to unlatchedposition, whereupon the shaftway door may be opened manually. I

It willbe noted thatthe entire mecha- 10 )pism, including the operatingmotor and earing, for opening and closing concomitantly the doors of both car and shaftway is mounted upon and movable with the cle vator ,carfrom floor to floor, so that a single operating-mechanism will sufiice for all of the doors of the shaftway as well as the door of the car. I

While the inventionv has been described I and illustrated in connection with elevators,

it will be understood. that the invention is applicable tothe operation of doors in all cases where similar problems are encount- .ered. It w ll also be understood that various changes in the details and arrangement of parts herein described and illustrated for the purpose of explaining the nature of the invention, may be made by those skilled in the art, within the principle and scope of the inventionas expressed in the appended claims. "l Y -Claims; l p

1. A. dooroperating device for elevators and the'li-ke COITlPI'ISlIIgfi pair of pulleys spaced apart in the direction of travel of the door tobe operated, a cable running between andgui 'ded by the'lpulleys, means for causing linearmovement. of the cable, a link connected to the cable to be operated there by, and aconnection trom the link to the door to be operated, whereby the door will be operated when the cable is: given linear movement, the decreasing bodily speed of the link as its. pointof attachment to the cable reaches, and moves around the'said one of the pulleys serving to checkwithout im pactthe travel o t-the door' at its limit of travel in one direction.

2. A .door operating device for elevators and the like comprising a pair of pulleys spaced apart in the direction of travel of the door to be operated, a cable running between and guided by the pulleys, means for eaus-' ing linear movement of the cable, and means connecting to a oint of the cable the door .to be operated wiereby the door will be uping means reaches and moves around one ofcable, one of the pulleys being mounted for I movement to slacken or tighten the cable, and yieldin means constantly stressing the movable pu lley in a direction to keep the cable taut but adapted to yield and allow the cable to slip when the travel of the door is prevented.

4. A door operating device for elevators and the like comprising a carriage, means supporting the carriage for travel in the direction of travel of the door to be operated, the carriage having a connection to the door, a pair of pulleys spacedapart in the direction of travel of the carriage, a cable passing between and in driving relation 'with the pulleys, means for causing linear travcl of the cable, anda link articulately connected at opposite ends to the carriage and cable, whereby as the cable at its point of connection to the link reaches and passes around one of the pulleys the travel of the door in' one direction will be checked without impact.

k 5. A door operating device for elevators and the like, comprising a carriage, means supporting thecarriage for travel in the direction of travel of the door to be operated, the carriage havinga connection to the door, a pair of pulleys spaced apart in the direction of travel of the carriage, a cable passing between and in driving relation with the pulleys, means for causing linear travel of the cable to'operate the door, one of the pulleys being shiftable to slacken or tighten the cable, and resilient means constantly stressing the shiftable pulley in a direction to keep the cable taut, but adapted'tp yield and slacken the cable to permit it to slip when travelof the door is obstructed.

6.'A door operating device for elevators and the like, comprising a cable, power actuated means including a pulley engaged by the cable for causing linear travel of the cable, a connection from the cable to the door to cause an operation of the latter when the cable is given linear movement, means forv keeping the cable taut on the driving pulley and adapted, when travel of the door .is obstructed,.to .yield and slacken thecable sufliciently'to allow slippage on the driving drum. r

7. A door operating device for elevators and the like'comprislng a p'airof pulleys spaced apart in the direction of travel of the door -to be operated, a cable running be-' I tween and guided by the pulleys, means for causing linear movement of the cable, a track, a carr age running on sa1d track and mechanically connected tothe door to operate the same, and a connection between the carriage and the cable whereby as the point of connection/of the carriage to the. cable travels in the stretch between the pulleys the carriage and door may be rapidly driven therefrom, and as the point of connection reaches and passes around with one of the pulleys, the carriage and door will be stopped without impact.

8. A door operating device for elevators and the like comprising a pair of pulleys spaced apart in the direction of traveler the door to be operated, a cable running between and guided by the pulleys, means for causing linear movement of the cable. atrack, a carriage running on said track and mechanically connected to the. door to operate the same, a connection between the carriage and the cable-whereby as the point of connection of the carriage .to the cable travels in the stretch between the pulleys the carriage and door may be rapidlydriven therefrom and as the point of connection reaches and passes around with one of the pulleys, the carriage and door will be stopped without impact, and buffer means. for preventing -the travel of the cable substantially beyond the point at which the travel of the door ischecked without impact. 9. A door operating device for elevators and the like comprising a pair of pulleys spaced apart in the direction of travel of the door to be operated, a cable running between and guided by the pulleys, power actuated means for causing linear movement of the cable, a track, a carriage running on the track and mechanically connected to the door to operate .the same, a connection between the carriage and'the cable whereby.

as the point of connection between the" cable and carriage travels in the stretch between the pulleys, the carriage and door may be rapidly driven therefrom, and as the pointof connection reaches and passes around with one of the pulleys, thecarriage' and door. will be stopped without impact, and

alimit device'for'rendering the power actuated means ineffective to'drive the cable shortly before the travel of the door is com; pleted. e

10. A door operating device torfelevators and the like comprising a pairof pulleys spaced apart in the direction of travel of the door to be operated, a cable running'between and guided bytlle pulleys, power actuated means for causing linear movement .of the cable, a track, a carr age runnn'ig on the track and mechanically connected to the door to operate the same, a connection betweenthe carriage and the cable whereby as'the point of connection between the cable and carriage travels in the stretch between the pulleys, the carriage and door may bev rapidly driven therefrom, and as the point of connection reaches and-passes. around point at which the travel otthe dooris checked without impact.

11. A door operating device for elevators and the like comprising a pulley, a cable passing over the pulley, power-actuated means for causing linear travel of the cable, a track, a carriage running on the track and mechanically connected to the door to operate the same, and a link pivotally coupled at one end to the cable and at its other end to the carriage, whereby as the point of .coupling of the link to the cable travels towards the pulley the door will be driven at the same rate, and as the point of coupling reaches and passes around with the pulley the link will act as a crank and stop the carriage and door without impact.

12. A door operating device for elevators 5 and the like comprising a pulley, a cable passing over the pulley, power-actuated means for causing linear travel of the cable,

a track, a carriage running on'thetrack and mechanically connected to the door to operate the same, a link pivotally coupled at one end to the cable and at its other end to the carriage, wherebyas the point of conpling'of the link to the cable travels totraveling with thecarriage, and a limit device in position to be operated by the-cam at approximately theend of the traveliol" the door and carriage and render the poweractuatedmeans inefi'ectlve to drive the cable. 7

13. A door operating device forelevators and the like comprising-a pulley, a

cable passing over the pulley, power-actur,;

ated means for causing linear travel ofth'e cable, a track, a carriage running on the track and mechanically; connected to the door to operate the same, a link'pivotally coupled. at one end to the cable and at. its other end to the carriage, wherebyas the point of coupling of the link to the cable travels towards the pulley the door will be driven at 'the'same rate, and as the point of coupling reaches and passes around with the pulley stop-the carriage and door without impact, a cam traveling with the carriage, a limit device in position to be operated bythe cam at. approximately the end of the travel of the door andpcarria e and render the power W actuated means ine ective to drivethe cable,

the link-"will act as a'crank and ion the point of coupling to a small increment of movement after the door has been checked. 14. A door operating device for elevators and the like comprising a 'pulley, a cable passing over the pulley, power-actuated means for causing linear travel of the cable,

a track, a carriage running on the track and mechanically connected to ,the door tooperate the same, a link pivotally coupled at one end to the cable and at its other end to the carriage, whereby as-the point of coupling of the link to the'cable travels towards the pulley the door will be driven at the same rate, and as the point of coupling reaches and passes around with the pulley the link will act as a crank and stop the carriage and door withoutimpac't, and a device carried by the door edge and operable upon the limit device to render the power-actuated means ineffective whenever the door edge presses'against an object obstructing closing of the door. J

15. A door operating device for elevators and the like comprising a pair of pulleys spaced apart in the direction of travel of the door to be operatedfa cable running between and guided by the pulleys, power actuated means for causing linear movement of the cable,'means connecting to a point of the cable the door to be operated whereby the door will be operated by the linear travel. oir the cable, the travel of the 'door in one direction being checked without impact as the point of connection between the cable and door connecting meansreaches'and moves around one of the pulleys, a limit device for a rendering the power actuated means automatically inefi'ectiv'e when the movement of the door is approximately complete, and means movably carried by the door to projeet beyond the side edge thereof and operable upon the limit device, when moved rela tively to the door in engaging an obstruction during the travel of the door, to render the POWBI actuated means inefl'ective, whereby the travel of the door will be halted until the obstruction is removed.

16. A door operating device for elevators and the like comprising a power actuated device for operating the door in a closing direction, means for preventing closing of the door by the power actuated device, in-

cluding a controlling member substantially co-extensive with the travel of the door, and a a safety device carried by the door along its side edge, and operable on the 'door when itstrikes an obstruction in the closing travel of the door, for engaging and operating the controlling member to check the closing operation of the door as long as the door engages with the obstruction.

17. A door. operating device for elevators and the; like comprising a power-actuated direction, a member substantially co-exteni sive with the travel of'the door and disposed adjacent to the door, means'for mounting the member so as to have a verticalcomponent of movement whena force is applied laterally thereto, asafety device carried by the door along itsforward side edge and operable on the door, when it strikes an obstruction in the closing travel of the door, for engaging and, operating the member vertically, and means operable by themember in moving vertically for interrupting the application of a closing force to the door by the p'ower actuated device as'long as the door remains in engagement with the obstruction.

18. A door operating device for'elevators and the like comprising a power actuated device for operating the door in a closing direction, a controlling member disposed parallel and adjacent to thedoor and substantially co-extensive" with its travel, links suspending -,'the controlling member for.

swinging movement in the direction of travel of the door, means controlled by the swingmg movement. of the member 1n one direction for causing a discontinuance of a closing force to the door by the power actuated device, a safety device carried by the (1001 forward'side edge ofthe'door and operable relatively to the door, when it strikes an obstruction in the closing travel of the door, for engaging and swinging the controlling -member in said one direction to check the closing of the door by the power actuated device as long as the door remains in engagement with the-obstruction.

19. A door operating device for-elevators and the like comprising a power actuated device for operating the door in 'a closing by the/power actuated device when the door,

completes its closing movement, said limit device hav ng an operating arm extending into proximity to the controlling member,

means on the controlliig member for engaging and operating th arm of the limit device to. check the'poweroperation of the door whenthe' member is swung in one. di-

rection, a safety-device carried by the door with atleast. a portion extending along the forward side edge of the door and operable relatively to the door, when it strikes an obstruction in the closing travel ofthe door, for-engaging and swinging the controlling member in said one direction to'ieheckthe with at least a portion extending along the closingv of the door by the power actuated device as long as the door remains in engagement with the obstruction.

20. A door operating device for elevators and the like, comprising a power actuated device for operating the-door in a closing direction, a safety member extending along and forming the forward side edge of-the door, means for mounting the safety member on the door so as to be movable vertically thereon when a force is I applied laterally thereto, and means adapted to be operated by said safety member in all positions of the door for rendering the power actuated device ineffective to close the door whenever the safety member strikes an obstruction and is operated vertically on the "of a closing force to said door by said power actuated device, and means, including a safety member carried by the door, operable upon the said stopping means, when the safety member strikes anobstruction in the doorway, for holding in abeyance the door closing effort of the power actuated means as long as the safety member remains in engagement with the obstruction. 22. A door operated device for elevators and the like comprising a carriage connected to thedoor to operate the same in both directions, electrically operated means con- I nected to the carriage to operate the same in both directions, switching means controlling the direction of operation of the carproximately the open and closed positions of the door for operating the switching means to limit operation of the carriageand door by the electrically driven means beyond those positions, and a safety device including a part carried by the 'door and movable relatively thereto when'it' engages an obstruction during the closing movement of the door for also operating the switching means to prevent further closing of the door by the electrically operated means as the obstruction remains.

111 a door operating devlce for elevaas long tors and the like, a carriage carried by the member with which the latch lever engages when the door is closed, a pair of rails car-.

ried by the carriage which, when the door is closed and the car is traveling will pass free of the latch, one-of the rails being fixed mechanical means in the same direction carrying the carriage and door in an opening direction.

24. In a door operating device for elevators and the like, having a car moving along a .shaftway, alatch lever on the door to be operated and having an operating end disposed horizontally at one side of its pivot when the lever is in latcheel'position, spaced rails carried by the car, normally clearing the latch during the travel of the car in the shaftway-and relatively movable to decrease the clearance space between them, and a mechanical device carried by the car and adapted when operated in one direction to shift the rails into contact with said latch lever on opposite sides of its pivot, operate the said end of the latch lever vertically above its pivot into unlatched position, and then shift the door in an opening direction.

25. In a door operating device for elevators and the like, alatch device normally holding in closed position the door to be operated, and means carried by the car and movable thereon first to move the door slightly further in a closing direction to permit free operation of said latch device and concomitantly engage and j/o-perate the latch device to release the door, and then subsequently to operate the door in an opening direction. f

26. A door operating device for elevators and the like, comprising a cable, power actuated means including a pulley engaged by the cable for causing linear travel of the cable, a carriage connected to thecable to be operated thereby when the cable is given linear movement, the point of connection between the carriage and the cable reaching and passing partly around the pulley in opera tlng the carriage in one direction, a latch on the door to beoperated, and means carried by the carriage and adapted when the cable 15 operatedin an opposite dilection to move into engagement wlth the latch, -operate the latch to release the door, and then by continued movement of the cable in the same direction operate the door in an opening direction. y

' 27; In a door operating device forelevators and the like,'a pivoted bell crank latch lever on the door'to beeperated, an operating projection carried by the door'in subthe latch lever, spaced opposite sides of the operating project1on,

concomitantly engage and 'o erate the bell crank lever to release the cor, and then operate the door in an opening direction by the engagement of the rails with the operating pro'ection.

28. Adoor operating device for elevators and the like, comprising spaced pulleys, a cable passing over and guided by said pulleys for linear travel in the direction of travel of the door to be operated, power actuated means for causing linear movement of the cable in either direction, a carriage carried by the elevator car. and mounted for travel in a direction parallel with the travel 7 of the door, a link articulately connected at its ends to the cable and to the carriage whereby the carriage will be operated by the cable, and as the connection of the link to the cable reaches and travels with the eriph ery of one of the pulleys the travel 0 the carriage will be brought to a stop without impact as the link passes through the axis of rotation of said one pulley and then operated in a reverse direction a short distance to its normal position when the car. is operating in the shaftway, a fixed rail on the carriage, a second rail carried on the carriage for movement laterally toward and from thefixed rail, a projection on the door to be operated, the rails normally. passing freely on opposite sides of the" projection during their travel with the car along the shaftway, means rendered effective by the link while passing toward the axis of rotation of said one pulley, in starting the carriage in operation from its said normal position, for shifting the movable rail into engagement with the projection, the slight forward movement of the carriage, occurring concomitantly, carrying the fixed'rail into engagement with the other side of the projection, continued movement of the'carriage by the cable operating the door in an openin'gdirection through the engagement of the rails with the projection on the door.

29. A door operating device forelevators and the like, comprising spacedpulleys, a

cable passing over and guided by; said "pulleys for linear travel .in' the direction vvoif travel tua'ted means for causing linear movement of the cable in either direction, a carriage carried by the elevator car and mounted for travel in a direction parallel with the travel of the door, a link articulately connected at its ends to the cable and to the carriage whereby the carriage will be operated by the cable, and as the connection ofthe link to the cable reaches and travels with the of the door to be operated, powerac-- periphery of one of the pulleys the-travel oi the carriage will be brought to a stop with-L,

out impact as the link passes through the axis of rotation of said one pulley and then operated in a reverse tance to its normal position when the car is operating inthe shaftway, a fixed 'rail on the carnage, a second rail carried on the carriage for movement laterally toward and from the fixed rail, a projection on the doorto be operated, the rails normally passing freely on OPPOSltGSldGS of the pro ection during their travel with the car along the shaftway,' means rendered effective by the link while passing toward the axis of rotation of said one pulley in starting the carriage in operationfrom its said normal position for shifting the movable rail into engagement with the projection, the slight forward movement of the carriage, occurring concomitantly, carrying the fixed rail into engagement with the other side of the projection, a latch normally preventing operation of the door, and operated to release the door by engagement therewith by one of the rails while approaching the door projection, continued movement of the carriage by the cable operating the door in an opening direction through the engagement of the rails with the projection on the cor.

30. A door operating device for elevators and the like, comprising a pulley, a cable passing around the pulley and extending tangentialh linear travel of the cable, a carriage, a link articulately connected at its ends to the cable and to the carriage,'whereby the carriage will be operated when the cable is given linear movement, the link and pulley acting as acrank device when the connection between the link and cable reaches and. passes around with the pulley, to stop the carriage withoutimpact and reverse its travel, means for limiting to a slight extent the reverse movement of the carriage by the travel of the cable beyond that necessary to stop the carriage, all of the above parts being carried by. the elevatorcar, and an abutment on the door to be operated against which the carriage engages to operate the door in a closing direction, the slight reverse movement of the carriage serving to provide clearance between the abutment oi the door and the part of the carriage operating against the abutment. as the carriage travels with the elevator car in the shat'tway.

.31. A door operating device for elevators and the like, comprising a pulley, a cable passing around the pulley and extending tangentially therefrom, means for causing lineartravel of the cable, acarriage, a link artieulately connected at its ends to the cable and to the carriage whereby the earriage willbe operated when the cable is given, linear movement, the lir kand pulley direction a short dis:

therefrom, means for causingabutment on the door to be operated against which the carriage engages to operate the door in a closlng dlrection, the slight reverse movement of the carriage serving to provide clearance between the abutment of the door and the part of the carriage operating against-the" abutment, as the carriage travels with the elevator car in the shaftway, door engaging means mounted on the carriage for movement into and out of engagement with a forwardly facing abutment surface on the door and yieldingly pressed toward a position in which it clears the door as the car travels in the shaftway, means adapted when released to operate the preceding means in a direction to engage the door, said last named means being operated by the link in moving into its limited position after the door is closed by the carriage, to permit operation of the door engaging means into a condition to clear the door as the car travels in the shaftway;

82. A door operating device for elevators and the like comprising a carriage operable on the elevator car in a dircction'parallel with the travel of the door to be operated, a device for operating the carriage in both directions, the carriage at its forward limit of travel being given a slight reverse movement, and means on the carriage adapted to engage with and push the door closed as the carriage is moved forwardly, the slight reverse movement providing clearance between the carriage and the door when the 'arriage moves with the car in the shaftway.

A door operating device for elevators and the like comprising a carriage operable on the elevator car in a direction parallel with the travel of the door to be operated, a device for operating the carriage in both directions, the carriage at its forward limit of travel being given a slight reverse move ment, means on the carriage adapted to engage with and push the door closed as the *arriage is moved forwardly, the slight reverse movement providing clearance between the carriage and the door when the carriage moves withthe car in the shaftway, means also on the carriage in a position normally to clear the door as the car and carriage move in the shaftway and movable into engagement with the door to form the connection between the door and carriage during the complete rearward movement of the car 'iage, and means operative automatically during the slight forward movement of the carriage preceding its door opening movement for causing operation of the preceding means to engage with the door and serve to operate it in an opening direction as the carriage operates rearwardly. y

34. A door operating device for elevators and the like comprising a carriage operable on the elevator car in a directionparallel with the travel of the door to be operated, a device for operating the carriage in both directions, the carriage at its forward limit of travel being given a slight reverse movement, means on the carriage adapted to engage with and push the door closed as the carriage is moved forwardly, the slight reverse movement providmg clearance between the carriage and the door when the carriage moves with the car in the shaftway, means also on the carriage in a position normally to clear the door as the car and carriage move in the shaftway and movable into engagement with the door to form the connection between the door and carriage during the complete rearward movement of the carriage, means operative automatically during the slight forward movement of the carriage preceding its door opening movement for causing operation. of the preceding means to engage with the door and serve to operate it in an opening direction as the carriage operates rearvvardly, and a latch device normally holding the door closed and ope "able to release the door by the said movable means on the carriage when the said movable means is moved to engage the door.

35. A door operating device for elevators and the like comprising a carriage operable on the elevator car in a direction i parallel with the travel of the door to be operated, a device foroperating the carriage in both directions, the carriage at its forward limit of travel being given a slight reverse movement, means on the carriage adapted to engage with and push the doorv closed the carriage is moved forwardly, the slight reverse movement providing clearance between the carriage and the door when the carriage moves with he car in the shaftway, means also on the carriage in a position normally. to clear the door as the car and carriage move in the shaftwa-y and movable into engagement with the door to form the connection between the door and carriage during the complete rearward movement of the carriage, means operative automatically during the slight forward movement of the carriage precedingits door opening move ment for causing operation of the preceding means to engage with the door and serve to operate it in an opening direction as the carriage operates rearwardly, a latch de-' vice normally holding the door closed and operable to release the door by the said 

